Question

Calculați cît mai simplu:
a) (12,8×5,8×0,8) ÷ 58;
b) (4,45×7,2×5,5) ÷ 0,11;
c) (25,8×1,44×0,5) ÷ 0,12;
d) (13,5×9,1×6,6) ÷ 0,013.​

Answer 1

$a)\:(\underline{12,8\times5,8}\times0,8):58=(\underline{59,392:58}=1,024\\b)\:(4,45\times7,2\times5,5):0,11=176,22:0,11=1602\\c)\:(25,8\times1,44\times0,5):0,12=18,576:0,12=154,8\\d)\:(13,5\times9,1\times6,6):0,013=810,81:0,013=62370$